Police arrested Thursday a suspect in connection with a September fatal stabbing in downtown Petaluma.

Bryan Webster, 25, was arrested at his home in Napa on suspicion of fatally stabbing Cristian Nunez-Castro, 24, of Windsor in the Golden Concourse on Kentucky Street in the early hours of Sept. 10. The altercation occurred in a walkway near the Keller Street parking garage.

A second unnamed stabbing victim, believed to be acquainted with Nunez-Castro, suffered an elbow wound. Webster was arrested with the assistance of the Napa Police Department and the Rohnert Park Department of Public Safety and transported to the Sonoma County Jail.